Add Javascript-dark theme (#159)

* Add javascript-dark theme

* Add Javascrit-dark theme screenshot

Author: Evavic44

docs/themes/README.md

@@ -71,6 +71,7 @@ You can also try out and customize these themes on the [Demo Site](https://githu
 |      `holi-theme`      | ![image](https://user-images.githubusercontent.com/62163030/129030429-0a4d48aa-d61f-4d0c-ae82-891d1b2476d7.png) |
 |       `ayu-light`      | ![image](https://user-images.githubusercontent.com/37243931/131808768-8617176a-fe84-4873-b9c2-f9ee74b30d87.png) |
 |       `javascript`     | ![image](https://user-images.githubusercontent.com/62628408/135756315-7a4b8134-8558-4e74-9f24-f8a1a2173b6f.png) |
+|   `javascript-dark`    | ![image](https://user-images.githubusercontent.com/62628408/135761927-a4acd543-c90b-430d-92a3-c96b32bfc390.png) |
 |     `noctis-minimus`   | ![image](https://user-images.githubusercontent.com/20955511/135754306-58ceccde-90d9-46f9-a7b2-1cb54b6fbe24.png) |
 ### Can't find the theme you like?
 

src/themes.php

@@ -782,6 +782,18 @@
         "sideLabels" => "#000000",
         "dates" => "#000000",
     ],
+    "Javascript-dark" => [
+      "background" => "#000000FF",
+      "border" => "#F7DF1EFF",
+      "stroke" => "#F7DF1EFF",
+      "ring" => "#F7DF1EFF",
+      "currStreakNum" => "#FFFFFFFF",
+      "fire" => "#F7DF1EFF",
+      "sideNums" => "#FFFFFFFF",
+      "currStreakLabel" => "#F7DF1EFF",
+      "sideLabels" => "#F7DF1EFF",
+      "dates" => "#F7DF1EFF",
+  ],
     "noctis-minimus" => [
         "background" => "#1b2932",
         "border" => "#F0F0F0FF",